Gin-saw gummer



(No Model.) y A ssheets-sheet .1. J. E. BOOKER & J. 0. PHILLIPS.

GIN SAW GUMMBR.

No, 430,333. Patented June l17, 18.90.

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(No Model.)

2 Sheets-Sheet 2.

J. E. BOOKER 8v J. 0. PHILLIPS.

GIN SAW GUMMER. No. 430,333.

Patented June 17, 1890.

UNITED STATES JOSEPH E. BOOKER AND JOHN O. PHILLIPS, OF RALEIGH, NORTHCAROLINA.

GIN-SAW GUIVIMER.

SPECIFICATION forming part of Letters Patent No. 430,333, dated June1'?, 1890- Anplication filed January 9, 1890. Serial No. 336,336. (Nomodel.)

To a/ZZ whom, it may concern.-

Be it known that we, JOSEPH E. BOOKER and JOHN O. PHILLIPS, of Raleigh,in the county of Take and State of North Carolina, have invented a newand useful Improvement in Gummers for Gin and Linter Saws, of which thefollowing is a full, clear, and exact description.

Our invention relates to an improvement in gummers especially adaptedfor use in ling gin and linter saws, and has for its object to provide amachine of simple and durable construction and readily manipulated,which will leave the teeth of the saw of full length and with keenpoints, and in every respect Vsimilar to the teeth first formed upon thesaw.

A further object of the invention is to provide a machine capable ofadjustment to saws of different diameters and having a steady andpositive feed.

The invention consists in the novel construction and 'combination of theseveral Y parts, as will be hereinafter fully set forth,

and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters and figures of referenceindicate corresponding parts in all the views.

Figure 1 is a central vertical section through the machine. Fig. 2 is atransverse section through the same. Fig. 3 is a plan View, and Figs. 4and 5 are detail views of the feed mechanism.

In carrying out the invention the frame of the machine consists,principally, of four corner-posts 10, connected at the top by side rails11 and at or near their center by lower side rails 12, the said siderails 12 and 11 being connected at one end by cross-bars 13 and 14 andat or near the other end by cross-bars and in said yoke and upon theupper forward cross-bar 15 a shaft 20 is horizontally journaled, whichshaft has attached thereto within the yoke a crown-gear 21, and acrank22 1s secu red to the outer end of the shaft, whereby it isrevolved. Y The crown-gear 21 meshes with a spur-wheel 23, mounted upona spindle 24, journaled in bearings attached to the forward edges of theupper and lower crossbars 15 and 16 of the frame, the said spurgear 23having attached to its spindle or 1ntegral with its upper face a pulley25. The spur-gear 23 meshes with a pinion 26, secured to a spindle 27,vertically mounted in bearings attached to the rear edge of the saidframe cross-bars 15 and 16, and upon sald spindle above the-pinion 26 agear-wheel 28 is secured. The spindle 27 projects upward beyond theupper cross-bar 15 of the frame, and to its upper end a'balance-wheel 291s attached.

Brackets 30 are projected horizontally from the opposed faces of theupper side bars 11 of the frame t-o the rear of the spur-gear 28, andbetween said brackets a rectangular metal box 31 is pivoted,the pivotingof the said box being effected by passing spring-arms 32, attached tothe outer faces-of the upper side bars of the frame, through suitableapertures in the brackets 30 and into the box '31 at or near its upperend. The lower end of the box has attached thereto, near its center, arearwardlyprojecting horizontal guide -bar 33, as best shown in Fig. 1,and in the box a shaft 34 is mounted, the said shaft having attached atits lower end a disk file 35, the edges whereof are beveled at top andbottom. The shaft 34E is provided with a pinion 36 near its upper end,which meshes with the spur-gear 28.

To the lower end of the box 31 one end of a spring 37 is attached, theother end being secured to the forward end cross-bar 17 of the frame. Ator near the center of the box, upon its rear side, a yoke 38 is secured,to which yoke one end of a turn-buckle A is pivoted, the saidturn-buckle consisting of a loop-section a, which is pivoted to theyoke, as aforespring-arm 39 is made to bear, secured to one IOO side barof the frame, and the turn-buckle is completed by a threaded rod a beingscrewed into the rear end of the turn-buckle, the rear extremity ofwhich rod is enlarged and flattened, and made to slide upon the lowerrear cross-bar 14 of the frame. The flattened enlarged end of theturn-buckle is provided with an elongated slot a2', as best shown inFig. 4, and a pin a3 upon its upper face near the rear extremity.

A feed-shaft 40 is j ournaled in suitable bearings attached to the rearface of the upper and lower rear cross-bars 13 and 14, which shaftpasses upward through the slot a2 in the turn-buckle and extends aboveand below t-he said cross-bars, the upper end of the shaft being pressedby a spring 41. Upon this shaft 40, immediately above the slotted rearextremity of the turn-buckle, a cam 42 is rigidly secured, as bestillustrated in Fig. 4, and above said cam a pulley 43 is mounted uponthe shaft, which pulley is connected with the forward pulley 25, withwhich it is in horizontal alignment by abelt 44. By this means thefeed-shaft is revolved directly from the drive-shaft or spindle. Againstthe rear extremity of the turn-buckle one end of a spring 45 is made topress, the tendency of which spring is to press the box 31 in thedirection of the forward end of the machine.

Upon the lower end of the feed-shaft 40 an essentially cylindrical block46 is secured, provided with a cam-face, and upon the periphery of thesaid block a plate 47 is attached, having a spiral lower edge, thisplate being adjustably attached to the block by set-screws passingthrough slots in the plate and into the block.

In operation the gang of saws B to be sharpened is mountedlongitudinally to revolve in any suitable frame B. The machine is placedupon the frame Btransversely of the same, and is clamped to the sidebars of the frame by clips B2 or in any other approved manner. Themachine is so set upon the frame that the le 35 and the feed-plate 47will contact with the teeth of the first saw, as illustrated in Fig. 1,and by means of the screw turn-buckle A the distance between the fileand the feed-plate may be regulated, so that the said file andfeed-plate will contact properly with opposite sides of the saw.

In operation, at one revolution of the crank a tooth is sharpened andanother tooth presented to be sharpened. This is eected in the followingmanner: Upon revolving the crank 22 motion is communicated from the mainshaft or spindle to the feed-shaft,

whereupon the said shaft is revolved, and

as the shaft revolves the peripheral surface of the cam 42, contactingwith the pin a3 upon the turn-buckle, forces the said turnbuckle to therear and draws the lower end of the box 31 rearward against the tensionof the spring` 37. The revolution of the feedshaft also causes thespiral edge of the feedplate 47 to so contact with one of the rear teethof the saw being filed to feed the saw gradually forward as the fileshaft or spindle 34, journaled in the box 31, advances. When the largestperipheral portion of the cam 42 contacts with the pin a3 of theturn-buckle. the file has cut to its greatest depth, and when the pin a3drops from the enlarged peripheral surface of the cam to the smallersurface of the same the turn-buckle and the box 3l are drawn forward bythe spring 37, attached to the latter, and the feed-plate will have sorevolved as to carry another tooth in position to be engaged by the fileupon the next revolution of the crank 22, and this operation is repeateduntileach tooth of the saw has been filed, whereupon the machine ismoved upon the frame B and placed in position to file the next saw ofthe gang.-

It will be observed that every movement of the machine is positive, andthat the feed, both of the saw forward to the file and of the file tothe saw, is uniform at all times.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. In a saw-gummer, the combination, with thedrive-shaft and a feed-shaft provided with a spiral feed-plate upon itslower extremity, of a box pivoted at its upper end and springcontrolledat its lower end, a file-spindle revolving in said box, and anadjustable turnbuckle attached to the box and having a camconnectionwith the feed-shaft, substantially as specified.

2. In a saw-gurnmer, the combinatiomwith the drive-shaft, a feed-shaftprovided with an attached cam and a spiral feed-plate, of a pivoted boxspring-controlled at its lower end, a file-spindle journaled in saidbox, and a screw turn-buckle attached at one end to the box and havingconnection at its other end with the cam of the feed-shaft,substantially as specified.

- 3. The combination, with a drive-shaft, a feed-shaft provided with anattached cam between its ends, a block secured to the lower end of thefeed-shaft, having attached thereto a feed-plate provided with a spirallower edge, and a pivoted box having a file-shaft joui'- naled thereinand connected with the main shaft, of a screw turn-buckle pivotallyattached at one end to the box, slotted at its other end to receive thefeed-shaft, and provided with an attached pin for contact with the camupon said feed-shaft, substantially as shown and described.

4. In a saw-gummer, the combination,with the main shaft, a feed-shaft,and a connec` tion, substantially as shown and described, between themain shaft and feed-shaft, a cam secured upon the feed-shaft between itsends, a feed-plate provided with a spiral lower edge attached to thelower extremity of the feed-shaft, a pivoted box located between thedrive-shaft and feed-shaft, the lower end of IOO IIO

which is spring-controlled, and a file-shaft the lower end of the box,substantially as journaled in said box, of a turn-buckle pivand for thepurpose specified. otally attaohed'at one end to the box and providedwith a slot at its opposite end to JOSEPH E. BOOKER. receive thefeed-shaft, and a pin for Contact JOHN O. PHILLPS. with lche 0am,springs bearing upon the upper Witnesses:

face 0f the turn-buckle andthe rear end of A. M. MCTHEETERS,

the same, and a guide-finger projected from HENRY E. LITCHFORD.

